What is a multi speed ECM blower motor?
Rather than operating on the all-or-nothing principle, multi-speed blowers run at different velocities according to the temperature requirements of your home. They power up at full throttle and switch to a lower speed to maintain the desired temperature.
Is a ECM blower motor variable speed?
The term “Variable Speed” actually refers to the blower motor inside the furnace or air handler. It’s an Electronically commutated motor, or (ECM). ECM’s are DC motors that function using a built-in inverter and a magnet rotor, and as a result are able to achieve greater efficiency than most AC motors.
How does a multi speed ECM motor work?
An electronically commutated motor adjusts its speed in response to changing conditions to maintain a programmed CFM. When a change in torque is sensed, the ECM ramps the RPM up or down to compensate. Different conditions will affect CFM.
What is the difference between a variable speed and multi speed furnace?
Multi-speed furnaces have a few set speeds that the furnace can operate at, whereas variable speed furnaces are much more flexible. Think of a multi-speed furnace like a ladder and a variable speed furnace like a ramp.
Can you replace a PSC motor with ECM motor?
Both your heating costs as well as the comfort level inside your home can benefit by upgrading from an outmoded PSC unit to an ECM furnace blower motor. It’s a good bet that the motor inside your existing furnace blower is a PSC (permanent split capacitor) type.
What is the difference between multi speed and variable speed?
Is a variable speed blower worth it?
The best news … a variable speed furnace motor is 80–85% more efficient than a standard furnace motor. So, if you are going to upgrade from a 90% to a 96% efficient furnace make sure it has a variable speed furnace motor, and you could enjoy energy savings of up to $400 a year. Otherwise it’s not worth the investment.
Is a variable speed blower furnace worth it?
What is a variable speed blower motor?
A variable-speed blower operates at different speeds to accurately control the temperature in your home. “Variable-speed blower” is a term that refers to an air conditioner motor that adjusts to run at a different speed.
How does a multi-speed furnace work?
Variable speed furnaces are able to run at a range of speeds, rather than one speed as traditional furnaces do. The differing speeds control heating and cooling airflow through the home. Throughout operation, the furnace monitors incoming data from your HVAC system to automatically make blower motor speed adjustments.